when i add in the following function it works, but the screen is blank apart from the line - as expected.
however, if i don't include this 'show' function silverstripe gives me a server error "Sorry, there was a problem with handling your request."...
in the error log it's saying 'singleton() Called without a class'

so i guess - do i need the 'show' function? how can i just pass back returned data to the myadmin/ page - as i would outside of the CMS...